Aquatic perennial herbs, rootless and suspended below the water surface; leaves whorled, sessile, divided; flowers unisexual, solitary in leaf axils, plants monoecious; fruit an achene with an apical spinelike beak; family now thought to represent an ancient angiosperm lineage possibly related to some of the earliest flowering plants.
Seed Type:
Angiosperm
Origin:
Native: native to North America. Non-native: not native to North America. Introduced Native: native to North America, but not Rowe Woods.
* Definitions based on the USDA terminology
Native
Category:
Aquatic
Identified by:
M. Becus
Months in Bloom:
The highlighted month(s) in this chart indicate when the plant has been observed blooming.